LCOV - code coverage report
Current view: top level - vcl/inc - regband.hxx (source / functions) Hit Total Coverage
Test: commit c8344322a7af75b84dd3ca8f78b05543a976dfd5 Lines: 1 1 100.0 %
Date: 2015-06-13 12:38:46 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_VCL_INC_REGBAND_HXX
      21             : #define INCLUDED_VCL_INC_REGBAND_HXX
      22             : 
      23             : #include <tools/poly.hxx>
      24             : 
      25             : /*
      26             : 
      27             : class ImplRegionBand
      28             : 
      29             : This class handles one y-band of the region. In this band may contain one
      30             : or more seprarations in x-direction. The y-Band do not contain any
      31             : separation after creation.
      32             : 
      33             : The separations are modified with basic clipping functions like Union and
      34             : Intersection - the Class will process the clipping for the actual band.
      35             : 
      36             : */
      37             : 
      38             : // element for the list with x-separations
      39             : struct ImplRegionBandSep
      40             : {
      41             :     ImplRegionBandSep*          mpNextSep;
      42             :     long                        mnXLeft;
      43             :     long                        mnXRight;
      44             :     bool                        mbRemoved;
      45             : };
      46             : 
      47             : enum LineType { LINE_ASCENDING, LINE_DESCENDING, LINE_HORIZONTAL };
      48             : 
      49             : // element for the list with x-separations
      50             : struct ImplRegionBandPoint
      51             : {
      52             :     ImplRegionBandPoint*        mpNextBandPoint;
      53             :     long                        mnX;
      54             :     long                        mnLineId;
      55             :     bool                        mbEndPoint;
      56             :     LineType                    meLineType;
      57             : };
      58             : 
      59             : class ImplRegionBand
      60             : {
      61             : public:
      62             :     ImplRegionBand*             mpNextBand;         // pointer to the next element of the list
      63             :     ImplRegionBand*             mpPrevBand;         // pointer to the previous element of the list (only used temporarily)
      64             :     ImplRegionBandSep*          mpFirstSep;         // root of the list with x-separations
      65             :     ImplRegionBandPoint*        mpFirstBandPoint;   // root of the list with lines
      66             :     long                        mnYTop;             // actual boundary of the band
      67             :     long                        mnYBottom;
      68             : 
      69             :     // bitfield
      70             :     bool                        mbTouched : 1;
      71             : 
      72             :                                 // create y-band with boundaries
      73             :                                 ImplRegionBand( long nYTop, long nYBottom );
      74             :                                 /** copy y-band with all data
      75             :                                     @param theSourceBand
      76             :                                         The new ImplRegionBand object will
      77             :                                         be a copy of this band.
      78             :                                     @param bIgnorePoints
      79             :                                         When true (the default) the
      80             :                                         band points pointed to by
      81             :                                         mpFirstBandPoint are not copied.
      82             :                                         When false they are copied.
      83             :                                         You need the points when you are
      84             :                                         planning to call ProcessPoints()
      85             :                                         later on.
      86             :                                 */
      87             :                                 ImplRegionBand( const ImplRegionBand & theSourceBand,
      88             :                                                 const bool bIgnorePoints = true);
      89             :                                 ~ImplRegionBand();
      90             : 
      91             :     long                        GetXLeftBoundary() const;
      92             :     long                        GetXRightBoundary() const;
      93             : 
      94             :                                 // combine overlapping bands
      95             :     bool                        OptimizeBand();
      96             : 
      97             :                                 // generate separations from lines and process
      98             :                                 // union with existing separations
      99             :     void                        ProcessPoints();
     100             :                                 // insert point in the list for later processing
     101             :     bool                        InsertPoint( long nX, long nLineID,
     102             :                                              bool bEndPoint, LineType eLineType );
     103             : 
     104             :     void                        Union( long nXLeft, long nXRight );
     105             :     void                        Intersect( long nXLeft, long nXRight );
     106             :     void                        Exclude( long nXLeft, long nXRight );
     107             :     void                        XOr( long nXLeft, long nXRight );
     108             : 
     109             :     void                        MoveX( long nHorzMove );
     110             :     void                        ScaleX( double fHorzScale );
     111             : 
     112             :     bool                        IsInside( long nX );
     113             : 
     114     4915058 :     bool                        IsEmpty() const { return ((!mpFirstSep) && (!mpFirstBandPoint)); }
     115             : 
     116             :     bool                        operator==( const ImplRegionBand& rRegionBand ) const;
     117             : 
     118             :     /** Split the called band at the given vertical coordinate.  After the
     119             :         split the called band will cover the upper part not including nY.
     120             :         The new band will cover the lower part including nY.
     121             :         @param nY
     122             :             The band is split at this y coordinate.  The new, lower band
     123             :             will include this very value.
     124             :         @return
     125             :             Returns the new, lower band.
     126             :     */
     127             :     ImplRegionBand*             SplitBand (const sal_Int32 nY);
     128             : };
     129             : 
     130             : #endif // INCLUDED_VCL_INC_REGBAND_HXX
     131             : 
     132             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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